Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTNAVIGATION SYSTEMTROUBLE SHOOTINGPICTUREUNIT CHECK
2004 Acura 3.5RL
Unit Check
2004 Acura 3.5RLSECTION Unit Check
UNIT CHECK menu will display DISP, GPS, NAVI ECU, SYSTEM HISTORY, CAR STATUS, BACKUP CLEAR and FORCE DOWNLOAD keys. FORCE DOWNLOAD key is for manufacturer's use only. Touch any other item key to be tested:
- DISP - When connection shows NG (no good), check for open or short in communication line. See WIRING DIAGRAMS . If communication line is okay, replace display unit. When ROM or RAM show NG, replace display unit.
- GPS - This screen shows condition of GPS reception and vehicle position.
- NAVI ECU - If any item shows NG, replace navigation unit.
- SYSTEM HISTORY - This screen is for manufacturer's use only. DO NOT touch CLR switch. Otherwise, system history will be cleared.
- CAR STATUS - If indication does not match actual vehicle status, check appropriate signal line. See CAR STATUS MENU table.
- BACKUP CLEAR - This screen is for manufacturer's use only.
CAR STATUS MENU
| Description | Status | |
|---|---|---|
| VSP (Vehicle Speed Pulse Indication) | ||
| Vehicle Is Not Moving | OFF | |
| Vehicle Is Moving | ON | |
| BACK (Reverse Indication) | ||
| Shift Lever Is In Any Position Other Than Reverse | OFF | |
| Shift Lever Is In Reverse | ON | |
| CHG (Charging Indication) | ||
| Engine Is Not Running & Generator Is Not Charging | OFF | |
| Engine Is Running & Generator Is Charging | ON | |
| ILL (Illumination Indication) | ||
| Parking Lights Or Headlights Are Off | OFF | |
| Parking Lights Or Headlights Are On | ON | |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.